230 ADDITIONS TO THE FOSSIL. (16) 
towards Ihe Equator, as we could find it in our own regions through 
various geological ages. The vertebrates really have their relations from 
the Equator to the Poles, but this is not at all a phyletic series, be- 
cause the real blood-relation is to be found through tlıe series of 
exlinct forms. 
The relation from the Equatorto the Poles men- 
tioned above, according to my opinion, is in fact the 
short recapitulation of the real phyletic evolution, 
on which allthe species living under the temperate 
zone — have undergone from the beginning of organic 
life Il 9 aa 
